Not sure what the average is, but just about 50% of the company has been with us for 5 years or more. Everyone’s tenure is listed under their name here:
At its most basic, in the long term we need more new customers than old customers we lose to natural churn. We also need to keep our costs in check to make sure we are making more money than we spend. It’s a simplification, but that’s really all we need to stay in business.